Collected Warhammer Volumes part 7: Step through binding part 3- Board yet?

Quick update with about as far as I'm likely to get before buzzing off to New Zealand. This bit is optional, but to give the spine some interest I'm going to recreate the look of ancient bound books and put bars on the spine. This replicates the old practice of sewing gathers around thick twine which is then fixed into the boards. The bars on my books are 5mm wide strips cut from some